Roy Rogers,"the king of the cowboys," and country music star Randy Travis have become a duet.

The two said Friday night that they recorded Rogers' theme song, "Happy Trails to You." Travis said the song was the first one he has recorded for an album of duets. He did not say who his other singing partners will be or when the record will be released.Travis and Rogers discussed the project Friday on The Nashville Network's "Nashville Now" program. Rogers is a member of the Country Music Hall of Fame for his western singing. Travis has recorded a string of No. 1 hits, including the current "Deeper Than the Holler" and "Forever and Ever, Amen."